﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace OliveChess
{
    static class Mailbox
    {
            public static int[] mailbox =  {
                    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
                    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
                    -1,  0,  1,  2,  3,  4,  5,  6,  7, -1,
                    -1,  8,  9, 10, 11, 12, 13, 14, 15, -1,
                    -1, 16, 17, 18, 19, 20, 21, 22, 23, -1,
                    -1, 24, 25, 26, 27, 28, 29, 30, 31, -1,
                    -1, 32, 33, 34, 35, 36, 37, 38, 39, -1,
                    -1, 40, 41, 42, 43, 44, 45, 46, 47, -1,
                    -1, 48, 49, 50, 51, 52, 53, 54, 55, -1,
                    -1, 56, 57, 58, 59, 60, 61, 62, 63, -1,
                    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
                    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
            };
 
            public static int[]  mailbox64 = new int[64] {
                21, 22, 23, 24, 25, 26, 27, 28,
                31, 32, 33, 34, 35, 36, 37, 38,
                41, 42, 43, 44, 45, 46, 47, 48,
                51, 52, 53, 54, 55, 56, 57, 58,
                61, 62, 63, 64, 65, 66, 67, 68,
                71, 72, 73, 74, 75, 76, 77, 78,
                81, 82, 83, 84, 85, 86, 87, 88,
                91, 92, 93, 94, 95, 96, 97, 98
            };



            internal static int GetSquare(int sq)
            {
                return mailbox[mailbox64[sq]];
            }
    }
}
